Spectroscopic and mechanical evidence of the influence of the substrate on an anaerobic adhesive cure

The catalytic effect of different substrates-steel, aluminium and copper-on the curing reaction of a standard anaerobic adhesive is investigated by infrared microscopy in reflection mode. Thus, kinetics of the cure reaction, studied from the decrease of the carbon-carbon double bonds absorption peak...

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Bibliographic Details
Published in:International journal of adhesion and adhesives 1997-01, Vol.17 (2), p.121-126
Main Authors: George, B., Touyeras, F., Grohens, Y., Vebrel, J.
Format: Article
Language:English
Subjects:
adhesive
anaerobic
Applied sciences
Chemical properties
Exact sciences and technology
metallic catalysis
Polymer industry, paints, wood
Properties and testing
shearing test
spectroscopy
Technology of polymers
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Summary:The catalytic effect of different substrates-steel, aluminium and copper-on the curing reaction of a standard anaerobic adhesive is investigated by infrared microscopy in reflection mode. Thus, kinetics of the cure reaction, studied from the decrease of the carbon-carbon double bonds absorption peak, are quite different depending on the substrate under investigation. Among the studied metals, copper has been found as the most reactive surface. The assumed role of saccharine contained in the anaerobic adhesive which is able to oxidise metals into ions will be highlighted. Finally, an attempt will be made to correlate the kinetic results with the mechanical performances of the adhesive joint measured by a single lap shearing test. Thus, fast curing reaction of the anaerobic adhesive on a surface such as copper leads to poor maximal strain while lower surface reactivity may provide better mechanical performances of the adhesive joints.
ISSN:0143-7496
1879-0127
DOI:10.1016/S0143-7496(96)00042-5